Kotoba Technologies raises $10M seed for East Asian voice AI
What's the deal? Kotoba TechnologiesDealroom has a profile for this one. Try Dealroom → has raised $10 million in seed funding to advance its voice AI model for East Asian languages.
The round was led by Kindred VenturesDealroom has a profile for this one. Try Dealroom →, with backing from Salesforce Ventures and the Sony Innovation FundDealroom has a profile for this one. Try Dealroom →. It brings the company's total funding to $23 million.
Kotoba, based in San Francisco with a research hub in Tokyo, builds Koto — a voice platform powering AI agents, smart hardware, and real-time translation.
Why now? Koto claims industry-leading performance in Japanese, Korean, and Chinese, with translation latency under two seconds.
The startup is riding momentum from its simultaneous translation app, Kotoba, which supports 21 languages and saw a major update in June 2026.
It has also released an alpha API and a Python SDK to court developers, opening up its speech-to-speech and low-latency speech recognition models.
What could go wrong? Voice AI is crowded, and bigger players are racing into real-time translation and on-device deployment.
Kotoba's bet on edge chips and distribution partnerships across automotive, electronics, and wearables depends on deals it has yet to lock down.
The signal: Backing from Sony Innovation Fund and Salesforce Ventures gives this early-stage startup both a hardware route into consumer devices and an enterprise channel, a combination that suits Kotoba's pitch of breaking language barriers with real-time simultaneous interpretation. With strategic corporate money rather than purely financial investors on its cap table, the company is betting that distribution — not just model quality — will decide who owns the voice layer for East Asia.
Read more: Third News
Image credit: Generated with Gemini
